Replacing Center Muffler

18 12 050 Replacing centre muffler (N63)

Special tools required:





Warning!
Scalding hazard!
Only perform these tasks after exhaust system has cooled down.





Support centre silencer with special tool 31 2 220 and a suitable universal lifter.





Release screws (1).

Tightening torque 18 20 6AZ.

Only when independent heating is fitted: release screw (2) on metering pump.

Tightening torque 18 20 7AZ.

Release screws (3) on underbody panels.

Remove reinforcement plate (4).





Note:
If the cutting line is not marked by a punch mark in the pipe, determine the cutting line by means of the pipe length on the new centre muffler.

Carry over cutting line to faulty centre muffler and mark.

Secure centre muffler against falling off.

Cut through exhaust pipes at marked point with a suitable tool.





Picture shows the left side, the procedure for the right side is identical.

Slacken nut (1).

Tightening torque 18 20 4AZ.





Installation:
Adjust centre muffler to fit and connect with clamps.

Centre clamp and tighten down.

Tightening torque 18 31 4AZ.

The procedure is identical on both sides.





Note:
Check exhaust system for leaks.